i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?
Ferroli Optimax HE31c a26 problem?
Hi how to increase the water pressure on ferroli optimax 25C?
I have a Ferroli FF 77 the pilot light has gone out will not stay on ?
Replace a diverter valve?
Ferroli DOMIcompact F 30 D?